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Sourcecode: fatrat version File versions

Queue.cpp

/*
FatRat download manager
http://fatrat.dolezel.info

Copyright (C) 2006-2008 Lubos Dolezel <lubos a dolezel.info>

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

In addition, as a special exemption, Luboš Doležel gives permission
to link the code of FatRat with the OpenSSL project's
"OpenSSL" library (or with modified versions of it that use the; same
license as the "OpenSSL" library), and distribute the linked
executables. You must obey the GNU General Public License in all
respects for all of the code used other than "OpenSSL".
*/

#include "fatrat.h"
#include "Queue.h"
#include "QueueMgr.h"
#include <QList>
#include <QReadWriteLock>
#include <QDir>
#include <QFile>
#include <QDomDocument>
#include <QtDebug>

using namespace std;

QList<Queue*> g_queues;
QReadWriteLock g_queuesLock(QReadWriteLock::Recursive);

Queue::Queue()
      : m_nDownLimit(0), m_nUpLimit(0), m_nDownTransferLimit(1), m_nUpTransferLimit(1),
      m_nDownAuto(0), m_nUpAuto(0), m_bUpAsDown(false), m_lock(QReadWriteLock::Recursive)
{
      memset(&m_stats, 0, sizeof m_stats);
      m_uuid = QUuid::createUuid();
      m_strDefaultDirectory = QDir::homePath();
}

Queue::~Queue()
{
      QWriteLocker l(&m_lock);
      qDebug() << "Queue::~Queue()";
      qDeleteAll(m_transfers);
}

void Queue::unloadQueues()
{
      qDebug() << "Queue::unloadQueues()";
      qDeleteAll(g_queues);
}

void Queue::stopQueues()
{
      QReadLocker l(&g_queuesLock);
      for(int i=0;i<g_queues.size();i++)
      {
            Queue* q = g_queues[i];

            q->lock();
            for(int j=0;j<q->size();j++)
            {
                  Transfer* t = q->at(j);
                  if(t->isActive())
                        t->changeActive(false);
            }
            q->unlock();
      }
}

void Queue::loadQueues()
{
      QDomDocument doc;
      QFile file;
      QDir dir = QDir::home();
      
      dir.mkpath(".local/share/fatrat");
      if(!dir.cd(".local/share/fatrat"))
            return;
      file.setFileName(dir.absoluteFilePath("queues.xml"));
      
      QString errmsg;
      if(!file.open(QIODevice::ReadOnly) || !doc.setContent(&file, false, &errmsg))
      {
            if(!errmsg.isEmpty())
                  qDebug() << "PARSE ERROR!" << errmsg;
            
            // default queue for new users
            Queue* q = new Queue;
            q->setName(QObject::tr("Main queue"));
            g_queues << q;
      }
      else
      {
            g_queuesLock.lockForWrite();
            qDeleteAll(g_queues);
            
            qDebug() << "Loading queues";
            
            QDomElement n = doc.documentElement().firstChildElement("queue");
            while(!n.isNull())
            {
                  if(!n.hasAttribute("name"))
                        continue;
                  else
                  {
                        Queue* pQueue = new Queue;
                        
                        pQueue->m_strName = n.attribute("name");
                        pQueue->m_nDownLimit = n.attribute("downlimit").toInt();
                        pQueue->m_nUpLimit = n.attribute("uplimit").toInt();
                        pQueue->m_nDownTransferLimit = n.attribute("dtranslimit").toInt();
                        pQueue->m_nUpTransferLimit = n.attribute("utranslimit").toInt();
                        pQueue->m_bUpAsDown = n.attribute("upasdown").toInt() != 0;
                        pQueue->m_uuid = QUuid( n.attribute("uuid", pQueue->m_uuid.toString()) );
                        pQueue->m_strDefaultDirectory = n.attribute("defaultdir", pQueue->m_strDefaultDirectory);
                        pQueue->m_strMoveDirectory = n.attribute("movedir");
                        
                        pQueue->loadQueue(n);
                        g_queues << pQueue;
                  }
                  n = n.nextSiblingElement("queue");
            }
            
            g_queuesLock.unlock();
      }
}

void Queue::saveQueues()
{
      QDomDocument doc;
      QDomElement root;
      QFile file;
      QDir dir = QDir::home();
      
      if(!dir.cd(".local/share/fatrat"))
            return;
      file.setFileName(dir.filePath("queues.xml.new"));
      
      if(!file.open(QIODevice::WriteOnly))
            return;
      
      root = doc.createElement("fatrat");
      doc.appendChild(root);
      
      g_queuesLock.lockForRead();
      
      foreach(Queue* q, g_queues)
      {
            QDomElement elem = doc.createElement("queue");
            elem.setAttribute("name",q->m_strName);
            elem.setAttribute("downlimit",QString::number(q->m_nDownLimit));
            elem.setAttribute("uplimit",QString::number(q->m_nUpLimit));
            elem.setAttribute("dtranslimit",QString::number(q->m_nDownTransferLimit));
            elem.setAttribute("utranslimit",QString::number(q->m_nUpTransferLimit));
            elem.setAttribute("upasdown",QString::number(q->m_bUpAsDown));
            elem.setAttribute("uuid",q->m_uuid.toString());
            elem.setAttribute("defaultdir",q->m_strDefaultDirectory);
            elem.setAttribute("movedir",q->m_strMoveDirectory);
            
            q->saveQueue(elem,doc);
            root.appendChild(elem);
      }
      
      g_queuesLock.unlock();
      if (file.write(doc.toByteArray()) == -1 || !file.flush())
            Logger::global()->enterLogMessage(tr("Queue"), tr("Failed to write the queue file!"));
      else {
            file.close();
            
            if(dir.exists("queues.xml.new"))
            {
                  dir.remove("queues.xml");
                  dir.rename("queues.xml.new", "queues.xml");
            }
      }
}

void Queue::loadQueue(const QDomNode& node)
{
      m_lock.lockForWrite();
      
      qDeleteAll(m_transfers);
      
      QDomElement n = node.firstChildElement("download");
      while(!n.isNull())
      {
            QDomElement e = n.firstChildElement("param");
            QMap<QString,QString> map;
            Transfer* d;
            
            d = Transfer::createInstance(n.attribute("class"));
            
            if(d != 0)
            {
                  /*while(!e.isNull())
                  {
                        if(e.hasAttribute("name"))
                              map[e.attribute("name")] = e.text();
                        
                        e = e.nextSiblingElement("param");
                  }
                  */
                  d->load(n);
                  m_transfers << d;
            }
            else
                  qDebug() << "***ERROR*** Unable to createInstance " << n.attribute("class").toAscii();
            
            n = n.nextSiblingElement("download");
      }
      
      m_lock.unlock();
}

void Queue::saveQueue(QDomNode& node,QDomDocument& doc)
{
      lock();
      
      foreach(Transfer* d,m_transfers)
      {
            QDomElement elem = doc.createElement("download");
            
            d->save(doc, elem);
            elem.setAttribute("class",d->myClass());
            
            node.appendChild(elem);
      }
      
      unlock();
}

int Queue::size()
{
      //cout << "Queue size: " << m_transfers.size() << endl;
      return m_transfers.size();
}

Transfer* Queue::at(int r)
{
      if(r < 0 || r >= m_transfers.size())
            return 0;
      else
            return m_transfers[r];
}

void Queue::add(Transfer* d)
{
      m_lock.lockForWrite();
      m_transfers << d;
      m_lock.unlock();
}

void Queue::add(QList<Transfer*> d)
{
      m_lock.lockForWrite();
      m_transfers << d;
      m_lock.unlock();
}

int Queue::moveDown(int n)
{
      if(m_transfers.size()>n+1)
      {
            m_lock.lockForWrite();
            m_transfers.swap(n,n+1);
            m_lock.unlock();
            
            return n+1;
      }
      else
            return n;
}

int Queue::moveUp(int n)
{
      if(n > 0)
      {
            m_lock.lockForWrite();
            m_transfers.swap(n-1,n);
            m_lock.unlock();
            return n-1;
      }
      else
            return n;
}

void Queue::moveToPos(int from, int to)
{
      Transfer* t;
      
      if(to > from)
            to--;
      
      m_lock.lockForWrite();
      t = m_transfers.takeAt(from);
      m_transfers.insert(to, t);
      m_lock.unlock();
}

void Queue::moveToTop(int n)
{
      m_lock.lockForWrite();
      m_transfers.prepend(m_transfers.takeAt(n));
      m_lock.unlock();
}

void Queue::moveToBottom(int n)
{
      m_lock.lockForWrite();
      m_transfers.append(m_transfers.takeAt(n));
      m_lock.unlock();
}

Transfer* Queue::take(int n, bool nolock)
{
      Transfer* d = 0;
      
      if(!nolock)
            m_lock.lockForWrite();
      if(n < size() && n >= 0)
            d = m_transfers.takeAt(n);
      if(!nolock)
            m_lock.unlock();
      
      return d;
}

void Queue::remove(int n, bool nolock)
{
      Transfer* d = take(n, nolock);
      
      if(d->isActive())
            d->setState(Transfer::Paused);
      d->deleteLater();
}

void Queue::removeWithData(int n, bool nolock)
{
      Transfer* d = take(n, nolock);
      
      if(d->isActive())
            d->setState(Transfer::Paused);
      
      QString path = d->dataPath(true);
      
      if(!path.isEmpty())
            recursiveRemove(path);
      
      d->deleteLater();
}

void Queue::setAutoLimits(int down, int up)
{
      m_nDownAuto = down;
      m_nUpAuto = up;
      
      foreach(Transfer* d, m_transfers)
      {
            if(!d->isActive())
                  continue;
            d->setInternalSpeedLimits(down, up);
      }
}

void Queue::setName(QString name)
{
      QWriteLocker l(&m_lock);
      m_strName = name;
}
QString Queue::name() const
{
      QReadLocker l(&m_lock);
      return m_strName;
}

void Queue::setDefaultDirectory(QString path)
{
      QWriteLocker l(&m_lock);
      m_strDefaultDirectory = path;
}

QString Queue::defaultDirectory() const
{
      QReadLocker l(&m_lock);
      return m_strDefaultDirectory;
}

void Queue::setMoveDirectory(QString path)
{
      QWriteLocker l(&m_lock);
      m_strMoveDirectory = path;
}

QString Queue::moveDirectory() const
{
      QReadLocker l(&m_lock);
      return m_strMoveDirectory;
}

bool Queue::contains(Transfer* t) const
{
      QReadLocker l(&m_lock);
      return m_transfers.contains(t);
}

void Queue::stopAll()
{
      QReadLocker l(&m_lock);
      for(int j=0;j<size();j++)
      {
            Transfer* t = at(j);
            if(t->isActive())
                  t->setState(Transfer::Paused);
      }
}

void Queue::resumeAll()
{
      QReadLocker l(&m_lock);
      for(int j=0;j<size();j++)
      {
            Transfer* t = at(j);
            Transfer::State state = t->state();
            if(state == Transfer::Paused || state == Transfer::Failed)
                  t->setState(Transfer::Active);
      }
}

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